Cap closure for bottles



A. KRAFT A ril 24, 1934.

CAP CLOSURE FOR BOTTLES Filed Sept. 17, 1932 Patented Apr. 24, 1934 UNITED STATES PATENT oFFicE In Germany 2 Claims.

This invention relates to a cap closure particu-- larly suitable for bottles containing beverages.

The object of the invention is, to make the cap closure so that it allows a rapid and easy closing 7 and also a convenient opening of the bottle, but,

at the same time, effects a tight durable closure and meets all hygenic requirements. For connecting the closure to the bottle head, an open sleeve is provided according to the invention, on which sleeve the closing cap is hingedly mounted and which carries a rotatable ring on which the closing cap can be fixed in closing position by means of a bayonet joint.

An embodiment of the invention is illustrated by way of example in the accompanying drawing,

in which:

Fig. l is a section on line I-I of Fig. 2 showing the bottle head with closure mounted thereon.

Fig. 2 is a horizontal section on line IIII of Fig. 1.

Fig. 3 shows the bottle head with closure in elevation.

Fig. 4 is a vertical section through a modified form of ring, showing a modified bottle in elevation.

Fig. 5 is a vertical section through a further modification of connecting ring and bottle.

According to Figs. 1 to 3 the closing cap 2 engaging in its closing position over the bottle head 1 is hingedly mounted on an open connecting sleeve 3 secured against turning on the bottle head. The connection is preferably effected by means of an intermediate element 4, the bent ends of which engage through eyes 5, 6 of the cap 2 and of the connecting sleeve 3 respectively. For the securing of the connecting sleeve 3 against turning, in the case of bottles made especially for the closure, a vertical nose 7 is provided on the bottle head 1. When such a nose is provided, the connecting sleeve 3 is fitted so that the nose engages in a slot 8 in the connecting sleeve as shown in Figs. 1 to 3. In the case of already existing bottles, which for fixing a closure according to Fig. 4 are provided with an annular groove 9, or according to Fig. 5 with lateral recesses or holes 10, the securing of the connecting sleeve against turning is effected by inwardly directed projections 11 on the connecting sleeve engaging the groove 9 or the recesses 10. If the bottle according to Fig. 4

is provided with an annular groove the inner projection is likewise of ring-shape and is pressed tightly into the groove 9 by a clamping ring 12. In the other instance only wartlike inner projections 11 come into question. These, providing May 12, 1932 the connecting sleeve engages thereunder, can be arranged on this sleeve, or in the case of narrow connecting sleeves as shown in Fig. 5 on extension flaps 13 of the connecting sleeve.

Between an upper guide projection 15 and a lower guide projection 16 of the connecting sleeve 3 a ring 14 is rotatably mounted. This ring serves for latching and unlatching the closure cap 2 by means of a bayonet connection with the cap 2. In this instance the projection 17 of the bayonet joint is mounted on the ring 14 in the form of construction illustrated. The bayonet joint slot 18 is provided in a downwardly directed extension 19 of the closing cap and has behind the vertical gripping arm 20 a tightening surface 21 rising slightly at an incline, and behind this surface a notch 22 into which the projection 17 drops for securing the cap in closing position.

When the bottle is opened, the projection on the ring 14 is in such a position on the bottle head 1 that, if the closing cap 2 is turned over the bottle head for closing the bottle, the vertical portion 20 of the bayonet slot open at the bottom slips over the projection 17, so that this projection comes into contact with the tightening surface 21. In order to bring the cap into closing position, the ring 14 is turned to the right until the projection 17 has slid over the tightening surface 21 and engages in the notch 22, thus pulling the closing cap against the bottle mouth.

The opening of the closure is effected by pressing against the front of the cap 2 at 23 until the projection 1'7 disengages in upward direction from the notch 22, whereupon the ring 14 is turned to the left until the projection 17 is again over the vertical portion 20 of the bayonet slot when the hingedly mounted cap 2 springs back.

The turning movement of the ring 14 may be limited by an abutment 24. This may, for example, be arranged on the connecting sleeve 2 and engage in a slot 25 of the ring 14.

The ring 14 may be employed either in collar, clip or how shape. In order to facilitate the turning of the ring 14, it may be provided with gripping surfaces or projections 26.

A cork or other packing disc 27 is arranged in the cap 2. With the exception of this packing disc the entire closure can be made of metal which either does not rust or has a coating of rust protecting substance.

I claim:-

1. A cap closure especially for bottles for beverages, comprising in combination an open connecting sleeve adapted to be placed around the bottle head and having an upper and lower guide projection, a ring rotatable around said sleeve between said guide projection, a projection on said ring, a closing cap hingedly connected to said sleeve adapted to be placed over the mouth of the bottle and having a bayonet slot adapted to engage over said projection on said ring to secure said cap in closing position.

2. A cap closure especially for bottles for beverages, comprising in combination an open connecting sleeve adapted to be placed around the bottle head and having an upper and a lower guide projection, means for securing said sleeve against turning on the bottle head, a ring rotatable around said connecting sleeve between the guide projections thereof, a projection on said ring, an intermediate element connected hinged- 1y at one end to said sleeve, a cap hingediy connected to the other end of said intermediate element, a packing disc in said cap, said cap having a slot with a conical tightening surface terminating in a notch adapted to engage over said projection on said ring with said conical tightening surface to press said packing disc tightly against the mouth of the bottle when said ring is turned and to engage in the notch at the end of said slot to secure said cap in closing position.

ANDREAS KRAFT. 

